EP2788138A1

EP2788138A1 - Apparatus for cutting corrugated pipes to length

Info

Publication number: EP2788138A1
Application number: EP12822962.2A
Authority: EP
Inventors: Thoralf Krause; Arnd Greding
Original assignee: Rothenberger AG
Current assignee: Rothenberger AG
Priority date: 2011-12-05
Filing date: 2012-11-08
Publication date: 2014-10-15
Anticipated expiration: 2032-11-08
Also published as: WO2013083119A1; US20140366382A1; EP2788138B1; US10589365B2; ES2845375T3; DE102011056040A1; DE112012005081A5

Abstract

The invention relates to an apparatus (1; 1') for cutting corrugated pipes to length, having a clamping device (3), which acts radially with respect to an axis (2), for fixing a corrugated pipe (100) in a machining position, and having a cutting tool (4) which is moved or is movable into an active position against the corrugated pipe (100) in the machining position, such that separation is effected by moving the cutting tool (4) and the corrugated pipe (100) in relation to one another. Stop means (5) that can engage in a trough (110) of the corrugated pipe (100) are provided, wherein the distance between the cutting tool (4) and the stop means (5) is variable in the axial direction with respect to the axis (2).

Description

Device for cutting corrugated pipes

The invention relates to a device for cutting corrugated tubes with a radially acting with respect to an axis clamping device for fixing a corrugated tube in one

Machining position and with a cutting tool, which is brought into operative position in the processing position against the corrugated pipe or can be brought, so that by moving the cutting tool and corrugated tube relative to each other a separation is effected. Technological background and state of the art

Devices of the type mentioned here, which are also referred to as corrugated pipe cutter, serve for separating corrugated pipe, the so-called corrugated pipe. Such a corrugated pipe is a revolution body with circular or other

Cross-section whose wall is substantially sinusoidal

Have corrugations with uniform or irregular profile. Corrugated pipes are increasingly used in solar thermal energy

Use and serve there, for example, as a heat exchanger. Because of their corrugated structure, the corrugated pipes have a relatively large surface area and thus promote heat transport. The corrugated pipes are also used in heating and sanitary engineering as well as in various industrial applications. Devices for cutting corrugated pipes usually have a clamping device, by means of which the corrugated pipe to be cut is kept clamped in a processing position. The cutting of the corrugated pipe is then carried out by means of a cutting wheel, which in the

Machining position is brought against the corrugated tube in operative position, so that a separation is effected by moving the cutting wheel to the corrugated tube. Such a device is from the product catalog of

Applicant (main catalog 2008, pages 112 and 113) known. The device or the pipe cutter is there described for the separation of unwelltem tube, although they also for

Cutting of corrugated pipe is suitable.

It has been shown that the cutting tool in the guided around the corrugated pipe cutting movement of his

attached position on the corrugated pipe laterally slips when the cutting tool is applied to the top or the apex of a shaft or on a flank of a shaft. The consequence of this is that the separating edge extends over the circumference of the

Corrugated tube in the axial direction with respect to the tube axis

runs unevenly. Such a running separating edge makes it difficult to connect the corrugated pipe in a pipeline system or any fittings and leads to leaks with the result of unwanted flow turbulence within the tube. DE 601 00 137 T2 describes a possibility by means of which a corrugated pipe along a wave crest can be cut without causing a lateral slippage of the Cutting tool comes during the separation process. It is described there a pipe cutter, which is pressed onto the surface of a corrugated pipe to be cut and has two axially spaced with respect to the longitudinal axis of the corrugated pipe arranged projections, which in each other

adjacent troughs intervene. Between the projections, a cutting tool is arranged, which by the engagement of the projections in the two troughs to a

Crest of the corrugated tube is attached and at the

Cutting movement around the pipe due to the engagement of the

Protrusions remain on the crest of the vertex without slipping sideways.

The projections and the cutting tool are in this known corrugated pipe cutter in a fixed arrangement to each other. It can therefore only corrugated pipes

cut, whose waves extend in the same direction in the direction of the tube axis. Also, the well-known

Corrugated pipe cutter set to a cutting of the corrugated pipes at a respective wave crest.

task

The invention is based on the object to provide a device for cutting corrugated pipes with the features mentioned by which a

Corrugated pipe depending on the requirement on the shaft bottom or on the

Wave crest, but also on a flank of a wave

can be cut to length. In addition, the device should allow a cutting of corrugated pipes, which to each other

having differently extending waves in the direction of the tube axis. Invention and positive effects

This object is achieved with a device for cutting corrugated pipes, which has the features of claim 1. Advantageous embodiments of the invention will become apparent from the dependent claims, the following description and the figures.

An inventive device for cutting to length of

Corrugated tubes has a radially acting with respect to an axis clamping device for fixing a corrugated tube in one

Machining position, preferably by the clamping device against the corrugated tube circumferentially bracing in operative position can be brought or brought. The axis preferably coincides with the tube axis or the center axis of the corrugated tube.

The device further has a cutting tool, which is brought into operative position in the processing position against the corrugated pipe or can be brought, so that by moving the cutting tool and corrugated tube relative to each other a separation is effected. The cutting tool can be used in the

Machining position be brought against the corrugated tube in operative position or be brought so that by rotating or rotating cutting tool and corrugated tube relative to each other about a common axis of rotation separation or a separation process is effected. For example, by moving the

Cutting tool to the corrugated pipe to cause a separation. The cutting tool preferably makes a rotational movement about an axis of rotation, which coincides with the central axis of the corrugated pipe. The device according to the invention is with respect to

Clamping device and / or the operation of the cutting tool preferably hand-operated or manually operable to perform a cutting to length of the corrugated pipes with little technical effort in a simple manner on site. Of course, the device with respect to the clamping device and / or the operation of the cutting tool and motor, in particular electric motor, be actuated. According to the invention, the device in a wave trough of the corrugated tube engageable or engaging stop means, wherein the distance between the cutting tool and the stop means in the axial direction with respect to the axis is variable.

By this measure, the cutting tool depending on

Requirement for a wave base, a crest or a wave edge of a shaft of a corrugated tube attachable. The cutting tool is in the separation movement for cutting the corrugated tube in the respective scheduled position on the

Shaft bottom, the crest of the wave or the wave flank positively guided by means of the stop means in the axial direction, so that a severing of the corrugated tube without changing the position of

Cutting tool is completed in the direction of the axis. In a separation of the corrugated tube at a wave crest thereby slipping into the adjacent trough in the course of the cutting movement, for example by moving the

Cutting tool around the corrugated tube, avoided. This also makes it possible to separate the corrugated tube from an obliquely oriented flank of a shaft, without it becoming loose in the course of the process

Separation process comes to a slipping of the cutting tool. The stop means use the wave-shaped contour of a shaft tube, in that the stop means engage in at least one constriction of the shaft tube forming a wave valley and thus the outer contour of the corrugated tube comes into abutment against the stop means in this area. It is one

Positioning of the corrugated tube relative to the

Slings and at the same time relative to the

Achieved cutting tool in the axial direction with respect to the axis.

By means of the stop means provided according to the invention, corrugated tubes can be easily separated at the shaft bottom, at the apex of the vertex or a flank of a shaft with a section substantially perpendicular to the axis or longitudinal axis of the corrugated tube, irrespective of the formation of the corrugation of the respective corrugated tube. Such a cut is possible both in corrugated pipes with a relatively large axial extent of a respective shaft as well as corrugated pipes with a relatively small axial extent of a respective shaft.

Also, by the device according to the invention a

Cutting a corrugated tube possible in which the waveform changes in the direction of the tube axis. By the

Variability of the distance between the cutting tool and the stop means in the axial direction is an individual adaptation to the existing waveform of a

respective corrugated pipe in a flexible manner possible.

By the invention thus the cutting position with respect to the shaft geometry of a corrugated pipe to be separated is changeable, in particular adjustable. The corrugated tubes can be made of any material

consist. The device according to the invention is suitable both for cutting corrugated pipes made of plastic and for cutting corrugated pipes made of metal.

According to one embodiment of the invention, it is provided that the stop means in their distance from the

Cutting tool in the axial direction with respect to the axis are variable. This is an individual and flexible adaptation to the existing waveform of a

respective corrugated pipe in a technically simple manner possible. The cutting position of the cutting tool can thus in a technically simple manner with respect to the shaft geometry of the

Wave tube can be adjusted by the stop means in its axial position with respect to the axis targeted in a desired stop position, for example against a

Flank of a wave trough of the corrugated pipe, brought.

Of course, it can also be provided that the stop means in the axial direction with respect to the axis

unchangeable, so fixed, are formed and

instead the cutting tool can be changed in the axial direction with respect to the axis.

It is also conceivable that both the stop means and the cutting tool in the axial direction with respect to the axis are each variable.

Preferably, the distance between the cutting tool and the stop means in the axial direction with respect to the axis is variable by the cutting tool and / or the

Slings are moved in the axial direction. It is advisable that when fixed corrugated pipe and / or brought into the operative position of the corrugated pipe cutting tool, the stop means in their distance from the

Cutting tool in the axial direction with respect to the axis

are changeable. This is a particularly simple

Handling the slings for the user of the device allows. The corrugated pipe can namely with respect

Cutting tool in a predetermined position in the axial

Direction to be fixed first and it is then the user still given the opportunity, the slings in their

Distance from the cutting tool in the way too

change that the slings in a given

Stop position are brought opposite the corrugated tube. It also suggests that the slings with

Cooperating actuating means through which the stop means in their distance from the cutting tool in the axial

Direction with respect to the axis are adjustable. Thus, the stop means with easy handling for the user in the axial direction with respect to the axis exactly in the

given stop position to bring the corrugated tube to the desired substantially vertical section to

Execute the tube axis by means of the cutting tool under positive guidance by the stop means.

In a technically simple manner, the adjusting means can be realized if, according to one embodiment of the invention, the adjusting means are formed by a screw mechanism, which is preferably operable from the outside. This is a particularly user-friendly setting of

Slings reached. According to one embodiment of the invention, it is provided that the stop means are arranged on a, a handle part having base body. This measure also aims to allow a cutting of the corrugated pipe for the user with ease of use. By the handle part is the

To grasp body of the user, preferably with one hand to seize.

A particularly simple handling results when, according to an advantageous embodiment of the invention, in addition to the stop means and the clamping device on the

Base body arranged or at least partially formed by the main body. By gripping the handle part thereby the entire device according to the invention is to be held in one hand, whereby the separation process when cutting the corrugated tube is considerably simplified.

According to a further embodiment of the invention, it is provided that the stop means are movably mounted on the base body in the axial direction with respect to the axis. This is a technically simple way

Adjustment realized by which the

Slings in the axial direction relative to the

Cutting tool can be moved.

According to a further embodiment of the invention, it is provided that the stop means at least one

Have stop surface, which can be brought in the processing position against a flank of a shaft of the corrugated pipe. This ensures that the stop means can be safely brought into abutment against an edge of a shaft of the corrugated tube in an axial direction and thus a Slipping of the cutting tool in a circumferential

Cutting movement is avoided around the corrugated pipe by the positive guidance generated by the surface.

A further embodiment of the invention is that the stop means have two abutment surfaces, which in the processing position selectively against each other

opposite flanks of waves, in particular

adjacent waves, can be brought. As a result, the stop means in the intervening in a wave trough position on the corrugated pipe, each with one of the surfaces against a

Bring flank into stop position, wherein the flanks are mutually opposing flanks of waves.

It is characterized by means of the stop means prevents the cutting tool relative to the corrugated pipe during

Cutting process laterally in the one axial direction

slipping can by one of the stop surfaces acts as a stop and serves as a positive guide for the corrugated pipe in the course of the cutting process. Unless when cutting the

Corrugated pipe it can lead to slipping of the cutting tool in the other axial direction, for example, when the cutting tool is attached to an opposite to the previous cut aligned edge of a shaft, by means of the other abutment surface lateral slipping can be prevented by the other abutment surface in

Active contact is brought to the opposite edge and then serves as a positive guide in the course of the cutting movement.

According to a preferred embodiment of the invention, it is provided that the stop means by an outward standing projection of serving as a support and / or guide for the corrugated pipe support and / or guide member is formed, which is preferably axially movable relative to the axis. There are thus combined in a single component several functions with respect to the corrugated pipe. The support and / or

Guide element comes next to its support or

Guide function with respect to the corrugated tube in addition to the function to form the stop means according to the invention by means of the projection. It is therefore a high one

Functional integrity realized with a single component, which costs and costs are kept low. The support or guide element results in an improved

Cutting process by means of the cutting tool, since the corrugated pipe is additionally supported or guided in the radial direction by the support or guide element during the separation process against the acting cutting forces.

It is advisable that the support and / or guide element is arranged coaxially to a clamping element of the clamping device. Such an arrangement can be realized in a technically simple manner, since clamping element and support or guide element can be arranged on a common axis or shaft. In this respect, it is possible in a simple manner to mount each clamping element and support or guide element rotatably on the common axis or shaft, so that both by the support or guide element as well as by the

Clamping a rolling movement relative to the

Corrugated pipe in the machining position is possible. As a result, executed in the course of the separation process relative

Twisting movement of corrugated pipe and the clamping elements of

Clamping device around the central axis of the corrugated pipe for the Users are running with a relatively low applied force.

According to a further embodiment of the invention, it is provided that the support and / or guide element is rotatably mounted on a threaded bolt, which cooperates for moving in the axial direction with respect to the axis with a mating thread of the base body. This is the result

To realize device according to the invention in a technically simple manner.

The support and / or guide element may be formed by a rotatable roller. Further, the projection may be formed by an outwardly projecting collar on the rotatable roller. Preferably, the collar is integrally formed on the roller, wherein the contour of the collar may be formed in the manner of a disc.

Due to the collar-shaped design of the projection on the rotatable roller, the support or guide element can roll along the outer circumference of the corrugated tube and engages with the collar throughout in a wave trough of

Corrugated pipe, so that the invention provided

Stop and guide function of the stopper designed as a collar acts during the cutting process of the corrugated pipe.

By the collar has the contour of a disc, in particular thin-walled disc, the collar can engage in troughs of wave pipes of any wave formations and act as a stop or guide in the course of the separation process. The support and / or guide element is in a sufficient To realize strength, if it is a metal part according to a further embodiment of the invention. Preferably, the support and / or guide element is an aluminum part. As a result, the support or guide element by weight is relatively light and protected against corrosion.

A further embodiment of the invention provides that the clamping device has at least one clamping element which is movable essentially radially with respect to the axis and which is formed by the cutting tool. This occurs in the course of fixing the corrugated tube in the clamping device at the same time the cutting tool in operative position against the corrugated pipe while exerting a clamping force. Depending on the

Corrugated tube applied clamping force, the cutting tool is thus simultaneously brought into the operative position of the corrugated pipe to a relative movement of the corrugated pipe relative to the cutting tool, preferably a multiple turning of the

Cutting tool to the corrugated pipe, the separation process

complete.

For this purpose, the cutting tool is preferably designed as a rotatable cutting wheel, which rolls around its outer circumference rotationally on the outer circumference of the corrugated pipe in the course of the separation process.

By the clamping element is substantially radially movable with respect to the axis, which acts on the corrugated tube

Clamping force can be set to a predetermined value.

For this purpose, a corresponding adjusting device is preferably provided, which may be formed on the main body of the device according to the invention. This is preferably radial with respect to the axis movable clamping element also mounted on the body movable.

According to a further embodiment of the invention or according to an independent idea, a joint means is provided, through which the cutting tool in a predetermined or

predetermined skew with respect to the axis can be brought.

As a result, the cutting tool with its cutting tip can also be attached to the rounded region of a shaft, which is adjacent to a wave crest, in a particularly simple manner

Cutting position can be brought by the cutting tool is brought into such a skew that the cutting tool is radially aligned with this rounded shaft portion and enters in this orientation with its cutting tip in abutment against the shaft portion.

It is advisable that an adjustment mechanism is provided, by means of which an alignment of the cutting tool is achieved or set in a selected or desired inclined position. Preferably, the cutting tool should be fixable in the respective inclined position, in particular lockable.

Furthermore, starting from a starting position, in which the cutting tool is substantially perpendicular to the axis or the center axis of the corrugated tube, the cutting tool should, in an axial direction, move in both directions in the axial direction

Oblique position with respect to the axis or central axis of the tube be brought. As a result, the cutting tool is particularly flexible in alignment with the corrugated pipe

bring to wherever possible at any point of a wave To bring the cutting tool optimally aligned in cutting position.

According to a preferred embodiment of the invention, the joint is associated with the base body or arranged on the base body.

A possible embodiment of the invention is that the hinge means by a on the body

arranged rotary joint is formed, through which a cutting tool holding part of the body relative to at least one clamping element of the clamping device

holding part about a substantially transverse to the axis extending pivot axis in a predetermined angular position can be brought. Such a configuration can be realized in a technically simple manner.

embodiment

Other goals, benefits, features and

Applications of the present invention will become apparent from the following description of a

Exemplary embodiment with reference to the drawing. All described and / or illustrated features alone or in any meaningful combination, the subject of the present invention, regardless of their

Summary in the claims or their dependency.

Show it:

Fig. 1 shows a possible embodiment of a

Device according to the invention for cutting to length Corrugated tubes in a side view together with a recorded corrugated tube, the device according to the figure 1 in

1 with a cutting tool acting on a wave crest of a corrugated tube, an enlarged detailed representation of the region J marked in FIG. 2, an enlarged detailed representation of the region K marked in FIG. 2, the device according to FIG a recorded corrugated pipe in one

Sectional view of Figure 2, wherein the cutting tool of the device acts on the shaft bottom of a shaft of the corrugated pipe, the device according to the figure 1 together with a recorded corrugated pipe in one

Sectional view according to Figure 2, wherein the cutting tool of the device acts on a flank, a shaft of the corrugated tube, another possible embodiment of a

Device according to the invention for cutting corrugated tubes to length in a side view together with a received corrugated tube, Fig. 7 shows the device according to the figure 6 in

Sectional view along the cutting line

FIG. 6 with a cutting tool acting in the area of a wave crest of the corrugated pipe,

Fig. 8a is an enlarged detail of the in the figure

7 marked area N and

Fig. 8b is an enlarged detail of the in the figure

7 marked area 0.

Figure 1 shows - in a schematic representation - a possible embodiment of a device 1 for cutting to length corrugated pipes in a side view. It is shown the device 1 together with a corrugated tube 100 to be cut.

The device 1 has a clamping device 3, by means of which the corrugated tube 100 to be cut in a

Machining position can be fixed. In FIG. 1, the corrugated pipe 100 has already been brought into the machining position and fixed by means of the clamping device 3.

Furthermore, the device 1, a cutting tool 4, which is placed in this processing position against the corrugated tube 100 in operative position, so that by moving

Cutting tool 4 and corrugated tube 100 relative to each other a separation is effected, for example, by the cutting tool 4 is moved around the corrugated tube 100.

To the corrugated tube 100 in the processing position to

fix, the clamping device 3 acts radially with respect to a Axis 2, which preferably with the center axis of the in

Machining position recorded and fixable or

fixed corrugated pipe 100 coincides. In order to fix the corrugated pipe 100 in the machining position, the

Clamping device 3 against the corrugated tube 100 circumferentially

tensioning brought in operative position.

The tensioning device 3 is formed on a base body 8, which has a grip part 7 for gripping by the user of the device 1. By the handle part 7 of the

Users take the device 1 with one hand and hold in one hand and thus by one-hand operation the

Cut corrugated tube 100 by, for example, the device 1 moves with its recorded in the processing position corrugated tube 100 against the corrugated tube 100 adjacent cutting tool 4 to the corrugated tube 100 and thereby cutting to length of

Corrugated tube 100 is effected.

For fixing the corrugated tube 100 in the machining position, the clamping device 3 at least three clamping elements 13, 14 and 15, which on the circumference of the corrugated pipe 100th

Act. The tensioning element 13 is at least partially visible in the view according to FIG. The clamping elements 14 and 15 are covered in the view of Figure 1 by other components of the device 1, wherein the respective

Outer contour is indicated by a dashed line.

Of the clamping elements 13, 14 and 15, the clamping elements 14 and 15 are arranged on the base body 8, in particular

stationary with respect to the base body 8 is formed. The

Clamping elements 14 and 15 are at a distance from each other, so that the clamping elements 14 and 15 serve as a receptacle for the corrugated tube 100 in order to hang on the corrugated tube 100 circumferentially can. In the figure 1, the device 1 is shown in such a way that the handle part 7 facing upward and the clamping elements 14 and 15 at a lower end portion of

Base body 8 are, so that the laid on the clamping elements 14 and 15 corrugated tube 100 remains placed before the tension by means of the clamping device 3 by its own weight. The clamping element 13 is translationally movable on the

Base body 8 mounted and can be moved translationally from a starting position in the direction against the clamping elements 14 and 15. A distortion of the corrugated pipe 100 is achieved in that the corrugated tube 100 between the clamping elements 13 on the one hand and the clamping elements 14 and 15 on the other hand is brought and then the clamping element 13 from the starting position in the direction against the corrugated tube 100 moves so far translationally until it to a Jamming of the corrugated tube 100 between the clamping elements 13, 14 and 15 comes. The corrugated tube 100 is then fixed in the machining position. In the machining position, the clamping elements 13, 14 and 15 act in the radial direction with respect to the axis 2 on the circumference of the corrugated tube 100. Preferably, the handle part 7 is part of a

Actuating mechanism by which the clamping element 13 can be moved translationally. Preferably, the handle part 7 is designed as a rotating part, so that by turning the handle part 7, for example, about its own longitudinal axis 26, it leads to a translational adjustment of the

Clamping element 13 comes, for example by a screw and / or thread mechanism is interposed. By the Actuating mechanism or screw and / or

Threading mechanism is achieved that the clamping element 13 remains in the raised position against the corrugated pipe 100 and thus the clamping force of the clamping device 3 is maintained.

Preferably, the translationally movable clamping element 13 is formed by the cutting tool 4 itself. The jamming of the corrugated pipe 100 in the machining position thus takes place by the cutting tool 4 itself, which against the

Outer circumference of the corrugated tube 100 is pressed. This results in a tension of the corrugated tube 100 between the

Cutting tool 4 and the clamping elements 14 and 15. By a further increased clamping force press the cutting tool 4 with its cutting edge in the peripheral wall of the corrugated pipe 100, so that by a subsequent rotational movement of the device 1 relative to the corrugated tube 100 it to severing the peripheral wall of the Corrugated tube 100 is coming. Preferably, the cutting tool 4 is designed as a cutting wheel, which rotatably movable about its central axis at a translational means of the handle part 7

Guide element 18 is mounted. Preferred are the

Clamping elements 14 and 15 each as a roll or ball

formed, which are preferably rotatably mounted about its own central axis on the base body 8.

FIG. 2 shows the device 1 in the region of the corrugated tube 100 in a sectional representation. As can be seen from a combination of Figures 1 and 2, the device 1 in a wave trough 110 of the corrugated pipe 100 engaging

Stop means 5, which in their distance from the Cutting tool 4 in the axial direction with respect to the axis 2 are variable.

In the course of the invention, under the wave trough 110 is to be understood the recess formed between two adjacent shafts, which ends in the wave base 120. Starting from the wave base 120, each wave extends toward the respective wave vertex 130, which essentially forms the outward-pointing tip of a respective shaft of the corrugated tube 100.

As can be seen from FIG. 2 and especially from the enlarged detailed illustration in FIG. 3a, this is

Cutting tool 4 in the machining position on a

Shaft vertex 130 of the corrugated tube 100 in operative position

brought. Based on this orientation of the

Cutting tool 4, the stop means 5 in axial

Direction relative to the axis 2 adjusted so far that the stop means 5 as a contact or stop against a

Side wall or flank of a shaft of the corrugated tube 100 act.

In the course of the separation process of the corrugated tube 100 by

Turning the device 1 and the cutting tool 4 relative to the corrugated pipe 100, in particular by

Turning the cutting tool 4 around the corrugated tube 100, the stop means 5 slide along the side wall of the one

Wave, so that thereby the device 1 and the

Cutting tool 4 is guided in the axial direction with respect to the axis 2 and thus slipping of the cutting tool 4 relative to the corrugated pipe 100 in the axial direction according to the arrow 19 is avoided. By the stop means 5 is thus separating the corrugated pipe 100 by a

Rotary movement of the cutting tool 4 relative to the corrugated tube 100 about the axis 2 with a substantially

vertical cut to axis 2 possible.

Figure 3b shows the detail K of Figure 2 in an enlarged view. As can be seen therefrom and from FIG. 2, the clamping means 5 are preferably formed by an outwardly projecting projection 11, which can be formed, for example, circumferentially, in particular by a circumferential collar. The projection 11 is furthermore preferably formed on a support and / or guide element 12,

in particular molded thereto, wherein the support and / or

Guide element 12 serves as a guide or support of the corrugated pipe 100 in the radial direction.

The stop means 5, in particular the projection 11, preferably has two stop surfaces 9 and 10, which can be brought in the processing position selectively against one of the mutually opposing flanks of adjacent waves.

As can be seen in particular from FIG. 2, the stop means 5 interact with adjusting means 6, by means of which the stop means 5 are spaced apart from the stop means 5

Cutting tool 4 in the axial direction with respect to the axis 2 are adjustable. The adjusting means 6 can by a

Be screw mechanism formed, which is actuated from the outside. For this purpose, it may be provided that the support or

Guide element 12 is arranged on a bolt 16, in particular on the bolt 16 is rotatably mounted about its own central axis, wherein the bolt 16 has a thread which with a mating thread 17, for example, the main body 8 meshes, so that takes place by rotation of the bolt 16 is a feed movement in the axial direction with respect to the axis 2. The support or guide element 12 is preferably in axial

Direction relative to the axis 2 fixedly arranged on the bolt 16, so that by the advancing movement of the bolt 16 and the support or guide member 12 together with its acting as a stop means projection 11 in the axial direction with respect to the axis 2 is moved.

The bolt 16 may at its one end as

Be trained screw head, so that for example by means of a screwdriver, a rotational movement of the bolt 16 can be performed and thus setting the

Slip 5 can be performed in the axial direction with respect to the axis 2. The adjustment of the stop means 5 in the axial direction with respect to the axis 2 is then still

possible if the corrugated tube 100 already in the

Machining position clamped present.

As can be seen in particular from FIGS. 1 and 2, the device 1 preferably has further support and / or guide elements 20, 21 and 22, which are used for guiding or

Supporting the corrugated pipe 100 in the radial direction during the separation process serve.

The support or guide element 20 is preferably arranged on the bolt 16, in particular rotatably mounted on the bolt 16 about its central axis. Preferably, the support or

Guide ^element 20 and provided with projection 11 support ^¬ or guide ^element 12 in the end regions of the bolt sixteenth arranged therebetween, two thread-meshing areas of thread of the bolt 16 and counter thread 17 and in turn between the two thread-combing areas, the clamping element 14 is arranged. Clamping element 14 and support or

Guide elements 20 and 12 are preferably arranged coaxially to the central axis of the bolt 16.

The support or guide elements 21 and 22 are arranged in the region of the cutting tool 4, wherein the preferably designed as a rotary cutting tool 4 together with the support or guide elements 21 and 22 arranged coaxially with respect to a common pin element 23 and between the support and Guide elements 21 and 22 the

Cutting tool 4 is arranged with the guide member 18. Preferably, cutting tool 4, support or guide elements 21 and 22 are rotatably formed around the pin member 23 and preferably connected in the axial direction of the pin member 23 is substantially stationary. As can be seen in particular from FIG. 2, the support or guide elements 21 and 22 have an inner circumference whose diameter is greater than the outer diameter of the pin element 23, so that the support or

Guide elements 21 and 22 relative to the pin member 23 in the radial direction have a desired game, a dipping of the cutting tool 4 in the wall of the

Corrugated tube 100 to allow before it to plant the

Außenwandung the corrugated pipe 100 to the support or

Guide elements 21 and 22 comes. Through the game, it is also possible that, in spite of the support or guide elements 21 and 22, the cutting tool 4 both at the apex 130 and at the shaft base 120 of the corrugated tube 100 waves can be set and a separation of the corrugated tube 100 takes place at this particular area.

As can be seen from FIG. 1, at least one support and / or is coaxial with the tensioning element 15

Guide member 24 is arranged, which serves as a support and / or guide for the corrugated tube 100 in the radial direction. It can also be provided with respect to the clamping element 15, a pin member 25, on which on the one hand the support or

Guide element 25 and a (not visible in Figure 1) further support or guide element are arranged and between the clamping element 15 is located, wherein the (not visible in the figure 1) support or guide element, the support ^¬ or guide element 24th and the clamping element 15 are coaxial with respect to the pin member 25, in particular rotatably mounted on the pin member 25, and preferably in the axial direction with respect to the pin member 25 in

Essentially stationary. FIG. 4 shows the device 1 according to FIGS. 1 and 2 in a sectional representation in the manner of FIG. 2.

In contrast to the arrangement of the corrugated tube 100th

opposite to the cutting tool 4 in Figure 2, the corrugated tube 100 is fixed in the processing position in FIG. 4 in such a way that the cutting tool 4 acts on the shaft base 120 of a shaft and the stop means 5 in the axial direction with respect to the axis 2 in Plant are brought against a side wall of a shaft. A side

Moving away in the axial direction of the corrugated tube 100 and / or the cutting tool 4 from the scheduled cutting position in the shaft base 120 is thus avoided because in the separation process a rotational movement between the corrugated tube 100 and the device 1 about the axis 2 under the guidance of the side wall on the stop means 5 takes place. FIG. 5 shows the device 1 according to FIGS. 1 and 2 in a further sectional view in the manner of FIG. 2. In FIG. 5, the corrugated tube 100 is clamped in the processing position in such a way that the cutting tool 4 engages in a wave trough 110 of the corrugated tube 100 and in the axial direction with respect to the axis 2 until it rests against the

Sidewall or flank of a wave is brought. The alignment of the cutting tool 4 on the corrugated tube 100 in the axial direction with respect to the axis 2 can be generated in that the stop means 5 have been adjusted so far in the axial direction with respect to the axis 2 that the corrugated tube 100 between the cutting tool the stop means 5 in

Is substantially free of play in the axial direction with respect to the axis 2 or is braced. As a result of a relative movement of cutting tool 4 and corrugated tube 100 relative to one another about axis 2, separation takes place essentially without displacement of cutting tool 4 in the axial direction. A section through the corrugated tube 100 is thus achieved substantially perpendicular to its central axis or axis 2. Figures 6 and 7 show another possible

Embodiment of a device 1 ^λ for cutting to length

Corrugated pipes in different representation. Components of the device 1 ^λ according to Figures 6 and 7, which with the

Components of the device 1 according to the figures 1 to 5

are identical or functionally identical

Provided with reference numerals; In this respect, reference is made to the description of the device 1 in Figures 1 to 5. The device 1 ^λ according to Figures 6 and 7 differs from the device 1 according to Figures 1 to 5, inter alia, by a hinge means 27, through which the

Cutting tool 4 in a desired or desired

Slope with respect to the axis 2 can be brought.

Preferably, the hinge means 27 are formed such that the cutting tool 4 even in the desired

Oblique position can be brought when the corrugated pipe 100 is already fixed in the machining position.

The device 1 ^λ has a basic body 8 ^λ modified to the main body 8 of the device 1, to which the joint means 27 is assigned. For this purpose, the joint means 27 is preferably designed as a pivot joint, which holds two parts 29 and 30 of the main body 8 ^λ pivotable relative to each other about a pivot axis 28. The part 29 is associated with the cutting tool 4 and the part 30, the clamping elements 14 and 15 of the clamping device 3 are assigned. To the inclination of the

To achieve cutting tool 4, the pivot axis 28 is substantially transverse to the axis 2 and the center axis of the

Corrugated pipe 100 aligned.

Starting from a starting position, in which the

Cutting tool 4 is oriented substantially perpendicular to the axis 2, by means of a pivoting movement about the pivot axis 28, the cutting tool 4 can be brought into a predetermined angular position with respect to the starting position.

Preferably, the hinge means 27 allows a

Pivoting movement about the pivot axis 28 in both

Turning directions, so that starting from the starting position, the cutting tool 4 in a predetermined angular position in the one Direction as well as in a predetermined angular position in the other direction of pivoting is adjustable.

As can be seen in particular from FIG. 7 and from the enlarged detailed illustration of FIG. 8A, the orientation of the cutting tool 4 in an inclined position is particularly suitable when the corrugated pipe 100 is slightly offset from the apex of a shaft, for example in one

adjacent rounded portion of the shaft, to be separated and thus bring the cutting tool 4 in this rounded area in cutting position.

In this cutting position of the cutting tool 4 is then carried out by the relative movement of the cutting tool 4 relative to the corrugated pipe 100 about the axis 2 separating the

Corrugated tube 100, wherein the stop means 5 and the projection 11 formed as a collar against a flank of a shaft acts (see in particular Figure 8B) and thus the corrugated tube 100 remains unchanged during the cutting process in its axial alignment relative to the tool 4.

Furthermore, the device 1 ^λ according to the figures 6 and 7 differs from the device 1 of Figures 1 to 5, inter alia in that the device in the device. 1

preferably provided support or guide elements 21 and 22 are omitted in the device 1 ^λ . In this respect, the device 1 has an acting as a rotation axis for the cutting tool 4 pin member 23 ^λ , which is opposite to the

Pin member 23 of the device 1 is shortened. Thereby and by the lack of support or guide elements on the

Pin element 23 ^λ is in the device 1 ^λ the

Freedom of movement in the area of the cutting tool 4 increased, since any support or guide elements on the pin member 23 ^λ does not hinder skewing of the cutting tool 4. Preferably, the cutting tool 4 by means of

Joint means 27, starting from the starting position by an angle to about 45 to 50 degrees pivoted. In FIG. 8A, for better understanding, examples are

Starting position represented by a line marked B and the angle.

C o m p a n c e m e n t i o n s

contraption

λ device

axis

tensioning device

cutting tool

slings

actuating means

handle part

body

λ basic body

stop surface

head Start

Support and / or guide element

clamping element

threaded bolt

mating thread

guide element

arrow

Support and / or guide element

pin element

λ pin element

Support and / or guide element

pin element

longitudinal axis 27 joint means

28 pivot axis

29 part

30 part angle

A starting position

100 corrugated pipe

110 wave trough

120 wave ground

130 wave crest

Claims

P a n t a n s p r e c h e

Device (1; 1 ^λ ) for cutting corrugated tubes with a radially acting with respect to an axis (2)

Clamping device (3) for fixing a corrugated tube (100) in a processing position and with a

Cutting tool (4), which is brought into the processing position against the corrugated tube (100) in operative position or can be brought, so that by moving the cutting tool

(4) and corrugated pipe (100) relative to each other a separation is effected, characterized in that in a

Wellental (110) of the corrugated tube (100) engageable

Stop means (5) are provided, wherein the distance between the cutting tool (4) and the stop means

(5) in the axial direction with respect to the axis (2)

is changeable.

Apparatus according to claim 1, characterized in that the stop means (5) in their distance relative to the cutting tool (4) in the axial direction with respect to the axis (2) are variable.

Apparatus according to claim 1 or 2, characterized

characterized in that in fixed corrugated tube (100) and / or in the operative position of the corrugated tube (100) brought cutting tool (4) the stop means (5) in her

Distance from the cutting tool (4) in axial

Direction relative to the axis (2) are variable.

Device according to one of the preceding claims, characterized in that the stop means (5) with Actuate (6) cooperate, through which the

Slings (5) in their distance from the

Cutting tool (4) in the axial direction with respect to the axis (2) are adjustable.

Apparatus according to claim 4, characterized in that the adjusting means (6) by a screw mechanism

are formed, which is actuated from the outside.

Device according to one of the preceding claims, characterized in that the stop means (5) on a, a handle part (7) having base body (8; 8 ^λ ) are arranged.

Apparatus according to claim 6, characterized in that the stop means (5) on the base body (8; 8 ^λ ) in the axial direction with respect to the axis (2) are movably mounted.

Device according to one of the preceding claims, characterized in that the stop means (5) have at least one stop surface (9), which in the processing position against a flank of a shaft of the corrugated tube (100) can be brought.

Device according to one of the preceding claims, characterized in that the stop means (5) have two abutment surfaces (9, 10), which in the

Machining position selectively against mutually opposite flanks of waves, in particular adjacent waves, can be brought.

10. Device according to one of the preceding claims, characterized in that the stop means (5) by an outwardly projecting projection (11) serving as a support and / or guide for the corrugated tube (100) support and / or guide element (12 ) is formed, which is axially movable relative to the axis (2).

11. The device according to claim 10, characterized in that the support and / or guide element (12) is arranged coaxially to a clamping element (13) of the clamping device (3).

12. Apparatus according to claim 10 or 11, characterized

in that the support and / or guide element (12) is rotatably mounted on a threaded bolt (15) which cooperates with a mating thread (16) of the base body (8; 8 ^λ ) for movement in the axial direction with respect to the axis (2) ,

13. Device according to one of claims 10 to 12, characterized in that the support and / or guide element (12) is formed by a rotatable roller and preferably the projection (11) is formed by an outwardly projecting collar.

14. Device according to one of claims 10 to 13, characterized in that the support and / or guide element (12) is a metal part, in particular an aluminum part.

15. Device according to one of the preceding claims,

characterized in that the tensioning device (3) has at least one clamping element (14) which is movable essentially radially with respect to the axis (2) and which passes through the cutting tool (4) is formed.

16. Device according to one of the preceding claims or according to the preamble of claim 1, characterized

characterized in that a hinge means (27) is provided, through which the cutting tool (4) can be brought into a predefinable oblique position relative to the axis (2).

17. The apparatus according to claim 16, characterized in that the hinge means (27) by a on the base body (8 ^λ ) arranged pivot joint is formed, through which a cutting tool (4) holding part (29) of the

Basic body (8 ^λ ) compared to at least one

Clamping element (14, 15) of the clamping device (3) holding part (30) about a substantially transversely to the axis (2) extending pivot axis (28) in a predetermined

Angle position can be brought.